fix(sidebar): clamp the sidebar to half the window on a narrow viewport - #5941
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The sidebar width was clamped against SIDEBAR_MIN_WIDTH (188) and SIDEBAR_MAX_WIDTH (420) and never against the window, so a narrow window left it owning most of the screen: 224px of a 414px viewport, 54%, with a hard 188px floor below that. tauri.conf.json declares the main window `resizable: true` with no `minWidth`, so that state is reachable by dragging. Fixed with `max-w-[50vw]` on the sidebar column rather than a JS clamp, for a reason worth recording: the width arrives as an inline style, and `max-width` always constrains `width`, so the browser applies this continuously with no listener, no re-render and no extra state. A JS clamp would have needed BOTH halves — the arithmetic and something that re-renders on resize — because `clamp()` in RootShellLayout only runs at render and nothing in the shell listens for `resize`: no handler, no matchMedia, no useMediaQuery anywhere in components/layout/shell or components/ui/Sidebar.tsx. That is measured, not assumed: injecting a viewport clamp into `clamp()` during the earlier investigation changed the rendered width not at all. Inert on desktop by construction. 50vw exceeds SIDEBAR_MAX_WIDTH above an 840px window, so at the 1280x900 default the clamp can never bind and the stored width decides exactly as before. The collapsed icon column is far below it. Known wart, deliberately accepted: dragging past 50vw on a narrow window stores a width larger than the one rendered, so widening the window later reveals the stored value. That preserves the user's preference rather than silently rewriting it, and clamping the stored value instead would need the resize listener this change exists to avoid. Tests: app-shell-responsive.spec.ts had a characterization test asserting the OPPOSITE — `width > 414 / 2` — written with a note that adding a viewport clamp should be the thing that makes it fail. This is that flip, and it now asserts the clamp holds. A second test asserts the clamp is inert at 1280px, so it cannot become a quieter second way to shrink the sidebar on a normal window. NOT EXECUTED. Local builds and test runs are prohibited in this phase, so this is reasoned from source: Sidebar.tsx:47-49 (constants), :232 (inline width), RootShellLayout.tsx:37-38 (clamp), tauri.conf.json (no minWidth). Prettier clean, tsc reports no errors in the touched files. CI is the check. ## Related Closes tinyhumansai#5907
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How this change flows2 changed behaviours across 11 relationships. 5 surrounding behaviours are shown (60 graph nodes walked). 47 further behaviours left out to keep the diagram readable. flowchart LR
n0["SidebarProviderProps<br/>changed"]:::changed
n1["clampWidth<br/>changed"]:::changed
n2["renderShell"]:::impacted
n3["cn"]:::impacted
n4["SidebarProvider"]:::impacted
n5["SidebarRail"]:::impacted
n6["width"]:::impacted
n0 -->|uses| n6
n1 -->|uses| n6
n2 -->|uses| n4
n2 -->|uses| n5
n4 -->|uses| n0
n4 -->|calls| n1
n4 -->|calls| n3
n4 -->|uses| n6
n5 -->|calls| n3
n5 -->|uses| n6
n6 -->|calls| n1
classDef changed fill:#0d4429,stroke:#238636,color:#e6edf3
classDef impacted fill:#161b22,stroke:#6e7681,color:#c9d1d9
classDef flagged fill:#5a1e02,stroke:#d93f0b,color:#ffffff
classDef blocking fill:#67060c,stroke:#f85149,color:#ffffff
Green: changed behaviour. Grey: surrounding behaviour. Arrows name the call, use, implementation, or test relationship. Orange: has findings. Red: has a finding that blocks the merge. |
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priority: p3
📝 WalkthroughWalkthroughThe sidebar now applies its viewport-relative width cap in JavaScript. The clamped width is shared by the rendered column, rail calculations, keyboard steps, and ChangesResponsive sidebar
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🟡 Moderate · up to On narrow windows, the sidebar may render different initial widths between server output and client hydration, causing hydration warnings or inconsistent layout, while resize controls can advertise and use a larger maximum than the sidebar can actually reach. These bounded correctness and accessibility issues should be addressed before merge. Suggested reviewers: Poem
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Linked Issues checkExplanation The implementation satisfies issue
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Inline comments:
In `@app/test/playwright/specs/app-shell-responsive.spec.ts`:
- Line 112: Update the sidebar desktop-width assertion around the boundingBox
check so a null or zero-width layout box fails explicitly instead of returning
early. After validating the box exists, assert that its width is positive and
preserve the existing responsive test flow.
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app/src/components/ui/Sidebar.tsxapp/test/playwright/specs/app-shell-responsive.spec.ts
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app/test/playwright/specs/app-shell-responsive.spec.ts:112
const box = await sidebar(page).boundingBox();
if (box === null || box.width === 0) return;If the sidebar fails to render (collapsed, selector mismatch, component crash), boundingBox() returns null and the test exits without asserting anything — a false pass. A later regression that stops the sidebar from rendering entirely would satisfy "no Edit button present" and look like a pass.
The null case should fail explicitly:
const box = await sidebar(page).boundingBox();
if (box === null) throw new Error('Sidebar not rendered — assertion would be vacuous');
if (box.width === 0) return; // collapsed, not an errorSame issue applies to the narrow-window test at line 74 (it has the same guard).
Review found the CSS-only `max-w-[50vw]` was worse than the bug it fixed: it constrains the rendered box while the rail's drag origin, its arrow-key step and its `aria-valuenow` all keep reading the larger stored width. With a persisted 420 in a 414px viewport the column renders at 207px, dragging fully left proposes ~213px, `max-width` pins it back to 207 — and the sidebar cannot be narrowed at all. Assistive tech was told 420 for a 207px column. The clamp now lives in `SidebarProvider`, so `useSidebar()` hands one effective width to every consumer and none of them can disagree. The stored value is left untouched, so widening the window restores the preference. Adds Sidebar.viewport-clamp.test.tsx, and drops an early return in the responsive spec that let a null or zero-width box pass as success.
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Inline comments:
In `@app/src/components/ui/Sidebar.tsx`:
- Around line 190-191: Update the Sidebar context and resize handling to use
effectiveMax, rather than the unconstrained maxWidth, as the active maximum.
Ensure resize consumers such as SidebarRail receive the viewport-constrained
value for aria-valuemax and clamp resize input against the same effective limit.
- Around line 121-123: Update the viewportWidth state initialization in
SidebarProvider to always use Number.POSITIVE_INFINITY for the initial render,
avoiding SSR and hydration differences; measure window.innerWidth in the
post-mount effect instead.
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app/src/components/ui/Sidebar.tsxapp/src/components/ui/Sidebar.viewport-clamp.test.tsxapp/test/playwright/specs/app-shell-responsive.spec.ts
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Review caught that the previous commit fixed one consumer and stopped. `useSidebar()` still exposed the configured `maxWidth`, so `SidebarRail` announced `aria-valuemax="420"` for a column that cannot exceed 207px at a 414px viewport. `setWidth` had the same flaw and it is the worse half: it clamped against the raw maximum, so a drag in a narrow window could STORE a width the column can never render — putting the stored and rendered values back into disagreement, which is the defect this branch exists to remove. Both now use `effectiveMax`, so the ceiling is as single-valued as the current width.
2 participants
Summary
The sidebar had no viewport-relative clamp, so a narrow window left it owning most of the screen.
max-w-[50vw]on the column fixes it declaratively.Problem
clamp()(RootShellLayout.tsx:37-38) constrains the sidebar againstSIDEBAR_MIN_WIDTH = 188andSIDEBAR_MAX_WIDTH = 420and never against the window. Measured at a 414×896 viewport: the sidebar renders 224px — 54% of the window, with a hard 188px floor below that.Reachable in the product:
tauri.conf.jsondeclares the main window"resizable": truewith nominWidth, so a user can drag below 414px.Nothing is visually broken at that size — no horizontal overflow, and the content surface keeps >40% — so this is a proportion problem, not a broken layout. Hence P3.
Solution
max-w-[50vw]on the sidebar column, not a JS clamp. The reason is worth stating, because the obvious fix does not work:The sidebar width arrives as an inline
style={{ width }}(Sidebar.tsx:232), and CSSmax-widthalways constrainswidth— so the browser applies this continuously, with no listener, no re-render and no extra state.A JS clamp would need both halves — the arithmetic and something that re-renders on resize — because
clamp()only runs at render and nothing in the shell listens forresize: no handler, nomatchMedia, nouseMediaQueryanywhere incomponents/layout/shell/orcomponents/ui/Sidebar.tsx. That is measured rather than assumed: injecting a viewport clamp intoclamp()during the investigation that produced this issue changed the rendered width not at all.Inert on desktop by construction. 50vw exceeds
SIDEBAR_MAX_WIDTH(420) above an 840px window, so at the 1280×900 default the clamp can never bind and the stored width decides exactly as before. The collapsed icon column is far below it.Known wart, deliberately accepted: dragging past 50vw on a narrow window stores a width larger than the one rendered, so widening the window later reveals the stored value. That preserves the user's preference rather than silently rewriting it; clamping the stored value instead would need the resize listener this change exists to avoid.
Submission Checklist
app-shell-responsive.spec.tscarried a characterization test asserting the opposite (width > 414 / 2), written with an explicit note that adding a viewport clamp should be the thing that makes it fail. This is that flip. A second test asserts the clamp is inert at 1280px, the edge case that stops it becoming a quieter second way to shrink the sidebar on a normal window.pnpm test:coverage/pnpm test:rustwere NOT run. The changed lines are one CSS class plus the two specs. The CI coverage gate is the check.N/A: behaviour-only change. No feature row added, removed or renamed.## Related—N/A: no matrix feature IDs affected.N/A: does not touch a release-cut surface. App-shell chrome, not covered byRELEASE-MANUAL-SMOKE.md.Closes #NNNin the## Relatedsection.Impact
Below an 840px window the sidebar stops exceeding half the width. At and above it, nothing changes — same stored width, same min/max, same drag and arrow-key behaviour.
Related
Closes #5907
Found during the fleet e2e coverage pass. The spec being flipped here landed in #5887, where it was written as a characterization test precisely so this fix would have to update it rather than pass silently.
AI Authored PR Metadata (required for Codex/Linear PRs)
Linear Issue
N/A— tracked as GitHub issue Sidebar has an absolute min-width and no viewport clamp; below ~450px it owns most of the window #5907, not Linear.N/ACommit & Branch
fix/5907-sidebar-viewport-clamp2c8aca899Validation Run
pnpm --filter openhuman-app format:check— ranprettier --writeon both touched files; both report unchanged (already clean).pnpm typecheck— rantsc --noEmit; zero errors in the touched files.N/A — NOT RUN.Local test execution is prohibited for this worker in the current phase. The flipped assertion is reasoned from source, not executed. CI is the check.N/A: no Rust changed.N/A: no Tauri code changed.Validation Blocked
command:pnpm --filter openhuman-app test:e2e:web:buildandplaywright testerror:not attempted — a standing instruction prohibits local builds and test runs for this worker in this phase.impact:the clamp's arithmetic is verifiable by reading (50vwvsSIDEBAR_MAX_WIDTH = 420gives an 840px crossover), and the 224px/414px measurement predates the prohibition. The flipped test has not been executed. CI is the verification.Behavior Changes
Parity Contract
SIDEBAR_ICON_WIDTH, ~48–56px) is far below 50vw at any window this app opens, so collapsed rendering is unaffected.Duplicate / Superseded PR Handling
N/ASummary by CodeRabbit
Bug Fixes
Tests